Question

solve for ( mangle cde ).
answer attempt 1 out of 2
( mangle cde=) submit answer

Explanation:

Step1: Analyze the angle composition

The angle \( \angle CDE \) is composed of two adjacent angles. One is \( 66^{\circ} \) and the other is \( 34^{\circ} \).

Step2: Calculate \( m\angle CDE \)

We use the angle - addition postulate. If two angles \( \angle A \) and \( \angle B \) are adjacent, then \( m\angle(A + B)=m\angle A+m\angle B \).
Here, \( m\angle CDE=66^{\circ}+34^{\circ} \).

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Answer:

\(100\)